evaluation of the use of leptodactylus ocellatus (anura: leptodactylidae) frog tissues as bioindicator of metal contamination in contas river, northeastern brazil.this paper presents a study on the viability of the use of tissues of the leptodactylus ocellatus species (anura leptodactylidae) as a bioindicator of metal pollution. the study is based on the determination and correlation of the concentrations of manganese, chromium, zinc, nickel, copper and iron in sediments and tissues (skin, muscles and viscera) of the frog leptodactylus ocellatus collected in the middle region of the contas river in bahia, brazil. the highest levels of the metals studied w ...201425590699
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